Remove unnecessary image packing code.

Source/platform/graphics/cpu/arm/WebGLImageConversionNEON.h

 /*
  * Copyright (C) 2012 Gabor Rapcsanyi (rgabor@inf.u-szeged.hu), University of Szeged
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 216 matching lines @@
         RGBA5551.val[1] = vorr_u8(componentR, componentG3bit);
         vst2_u8(dst, RGBA5551);
         dst += 16;
     }
 
     source += componentsSize;
     destination += componentsSize / 4;
     pixelsPerRow = tailComponents / 4;
 }
 
-ALWAYS_INLINE void unpackOneRowOfRGB565ToRGBA8(const uint16_t*& source, uint8_t*& destination, unsigned& pixelsPerRow)
-{
-    unsigned tailPixels = pixelsPerRow % 8;
-    unsigned pixelSize = pixelsPerRow - tailPixels;
-
-    uint16x8_t immediate0x3f = vdupq_n_u16(0x3F);
-    uint16x8_t immediate0x1f = vdupq_n_u16(0x1F);
-    uint8x8_t immediate0x3 = vdup_n_u8(0x3);
-    uint8x8_t immediate0x7 = vdup_n_u8(0x7);
-
-    uint8x8_t componentA = vdup_n_u8(0xFF);
-
-    for (unsigned i = 0; i < pixelSize; i += 8) {
-        uint16x8_t eightPixels = vld1q_u16(source + i);
-
-        uint8x8_t componentR = vqmovn_u16(vshrq_n_u16(eightPixels, 11));
-        uint8x8_t componentG = vqmovn_u16(vandq_u16(vshrq_n_u16(eightPixels, 5), immediate0x3f));
-        uint8x8_t componentB = vqmovn_u16(vandq_u16(eightPixels, immediate0x1f));
-
-        componentR = vorr_u8(vshl_n_u8(componentR, 3), vand_u8(componentR, immediate0x7));
-        componentG = vorr_u8(vshl_n_u8(componentG, 2), vand_u8(componentG, immediate0x3));
-        componentB = vorr_u8(vshl_n_u8(componentB, 3), vand_u8(componentB, immediate0x7));
-
-        uint8x8x4_t destComponents = {{componentR, componentG, componentB, componentA}};
-        vst4_u8(destination, destComponents);
-        destination += 32;
-    }
-
-    source += pixelSize;
-    pixelsPerRow = tailPixels;
-}
-
 ALWAYS_INLINE void packOneRowOfRGBA8ToUnsignedShort565(const uint8_t*& source, uint16_t*& destination, unsigned& pixelsPerRow)
 {
     unsigned componentsPerRow = pixelsPerRow * 4;
     unsigned tailComponents = componentsPerRow % 32;
     unsigned componentsSize = componentsPerRow - tailComponents;
     uint8_t* dst = reinterpret_cast<uint8_t*>(destination);
 
     uint8x8_t immediate0xf8 = vdup_n_u8(0xF8);
     uint8x8_t immediate0x1c = vdup_n_u8(0x1C);
     for (unsigned i = 0; i < componentsSize; i += 32) {
@@ skipping 16 matching lines @@
     pixelsPerRow = tailComponents / 4;
 }
 
 } // namespace SIMD
 
 } // namespace blink
 
 #endif // HAVE(ARM_NEON_INTRINSICS)
 
 #endif // WebGLImageConversionNEON_h